#include <bits/stdc++.h>
using namespace std;

class Solution
{
public:
    int main()
    {
        int n;
        cin >> n;
        for (int i = 2; i <= n; ++i)
            if (n % i == 0)
            {
                cout << n / i;
                break;
            }
        return 0;
    }
};

#ifndef __LOCAL_TEST__
int main()
{
    return Solution().main();
}
#endif